Shandong Taixiang explains the characteristics of all welded ball valves

2019/1/2 16:44:38

Why choose a fully welded ball valve in many ball valves! The following Shandong Taixiang valve explains the characteristics of the all-welded ball valve:

It can be directly buried and has small flow resistance: the direct-buried welded ball valve can be buried directly in the ground. It is not necessary to build a large well. It is only necessary to set up a shallow well on the ground. According to the design requirements of the pipeline, the length of the valve stem can be adjusted, saving a lot of Engineering time and construction costs. Unobstructed flow path characteristics, eliminate the retention of impurities in the valve parts, reduce the wear of seal parts and a large amount of fouling, while ensuring the end user flow, to solve the problem of temperature failure due to insufficient remote flow; the use of low flow resistance valves, will The resistance of the heating pipeline system is greatly reduced, the pressure of the water pump in the system is reduced, and the energy saving purpose is achieved.

Material selection: the valve body material is the same as the pipeline, no stress unevenness, anti-aging, good welding performance, suitable for the uncompensated direct buried pipeline laying technology used by modern heating enterprises, reducing the unevenness of the pipeline due to various stresses (such as compensation Heat leakage caused by cracking, bursting, etc. of the weld bead caused by leakage, crushing, crushing, earthquake, etc.; the internal parts of the valve are made of stainless steel, which can effectively prevent moisture or water from sticking to the valve stem and other parts. , reach the switch at any time.

Two-way sealing: It can ensure the bidirectional flow pressure in the annular heating system and the outlet end of the pump, and has a self-pressure releasing function. When the cavity pressure is abnormally increased, the spring force of the downstream end seat will be overcome, and the valve seat will be pushed open. The pressure is released into the downstream pipeline. After the pressure is balanced, the valve seat is re-engaged with the spherical surface by the spring force to achieve a two-way seal to ensure zero leakage.

A variety of connection methods: can be designed according to the requirements of pipeline design into a fireproof, anti-static structure, and a variety of connection combinations for special working conditions: flange connection, threaded connection, threaded flange, PE welding.

Comparison: Due to the complicated structure of the traditional gate valve and butterfly valve, the effective over-flow area is small or the internal structure is bent to generate turbulent flow, resulting in large flow loss. The sealing surface is usually washed by the medium for a long time, and the connection method is mostly flanged. The valve stem packing and flange connection parts often leak. Most of the valve housings still use casting valve bodies. The valve body will have defects such as trachoma and air holes due to the process conditions, which will greatly protect the pipeline. Hidden dangers. In summary, the all-welded ball valve will be the best choice for the valve in the thermal system, especially the all-welded ball valve is more cost-effective, and the overall cost is lower than that of the cast steel gate valve and the hard seal butterfly valve.